A hard pill to swallow means an unpleasant fact that is difficult to accept. This answer is correct because the expression has a fixed figurative meaning in English. In an SSC idiom question, students should match the whole phrase with its accepted meaning rather than translate each word separately.

• Classroom example: A hard pill to swallow can refer to an unpleasant fact that is difficult to accept.
• Story example: A writer may use A hard pill to swallow when describing an unpleasant fact that is difficult to accept.
• Exam example: When a sentence contains A hard pill to swallow, choose the meaning “an unpleasant fact that is difficult to accept.”